Hi-pass and Lo-pass

[David Katauskas]

I keep reading everywhere about hi-pass and lo-pass EQ-ing / Filtering. I haven't been able to make heads or tails of it. Please describe. Thanks.

 

[MadAudio]

A hi-pass filter does what it says - allows the highs to pass. So it filters low frequencies. It's generally a fixed point with a rolloff (for example 6db per octave).

A lo-pass filter is the inverse - allows lows to pass.

 

[David Katauskas]

Thanks. That makes sense.

 

[noisedude]

The terminology can get confusing when someone talks about a HPF and a low shelf. Are they the same? Are they the opposite? How about a rumble filter and a HPF?

This is the problem with not having enough dedicated terminology for the whole field ... we have this nerdy kinda mish-mash. It's quite endearing I guess.